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What is OpenSCAD?

OpenSCAD is free software for creating solid 3D CAD models by writing a script rather than by dragging shapes in a 3D viewport. You describe geometry in a small programming language — combining primitives such as cubes, cylinders and spheres with transformations, and exporting a model for 3D printing or further CAD work. It runs on Linux/UNIX, Windows and macOS, and its official site points to downloads, a tutorial, a user manual, a cheat sheet of modules and functions, and a library collection.

H3 Who it suits

  • Programmers and engineers who prefer precise, parameterised, repeatable models over freehand sculpting.
  • Makers and 3D-printing users producing functional parts: brackets, boxes, adapters, enclosures, jigs.
  • People building families of parts where a few variables (wall thickness, hole diameter, count) should regenerate the whole design.
  • Classroom and self-learners who want a small, readable language plus a documented path from tutorial to manual.

H3 What you trade away

  • The modelling view is primarily code-driven, so visual, organic or sculpted shapes are awkward compared with direct-manipulation CAD.
  • You need to think in coordinates and transformations; the first hour is slower than pushing a cube around.
  • Complex assemblies and drawings are not its focus — it is strongest for parametric solid parts.

H3 A concrete first project Model a wall bracket: a base plate as a cube, two screw holes as cylinders subtracted with difference(), and a vertical support rotated into place. Put the plate width, thickness and hole diameter at the top as variables, then change one number and re-render. That single loop — script, render, adjust a parameter — shows whether this workflow matches how you like to design.

H3 Next step Download it from the official site, open the tutorial and cheat sheet, and rebuild one small part you already own. If you prefer graphical modelling, compare it with a direct-modelling tool before committing; if you find yourself rewriting the same dimensions repeatedly, OpenSCAD is likely the better fit. See OpenSCAD for the downloads, tutorial and manual.

How does OpenSCAD differ from traditional 3D modeling software?

OpenSCAD is a code-first solid 3D CAD modeller: you describe objects with a script (CSG operations, primitives, transformations, modules), then render/export the result. Traditional 3D modeling software is typically direct-manipulation: you push/pull faces, sculpt meshes, or sketch-and-extrude in a viewport, and the model is the artifact you edit.

H3 Key differences

Dimension OpenSCAD Traditional 3D modeling software
Primary interface Text script; viewport is a preview Mouse/keyboard in a viewport; menus and gizmos
Model representation Solid CAD objects built from CSG and parametric code Often meshes (polygon modeling) or feature-based CAD history
Change workflow Edit parameters/code and re-render Drag, tweak, or edit feature tree interactively
Reuse Functions/modules and libraries encourage parametric families Reuse via components, modifiers, or CAD features, but less code-like
Best fit Precise, repeatable, parameter-driven parts Organic shapes, sculpting, concept art, and freeform editing
Learning curve Programming logic and 3D math Spatial manipulation and tool workflows

H3 Practical implications

  • Parametric design: In OpenSCAD, a single variable can drive a whole family of parts. That is ideal for brackets, enclosures, adapters, and printable parts you expect to revise.
  • Reproducibility: A script is a precise recipe. You can diff versions, share a few lines, and regenerate the same object later.
  • Shape freedom: If you need sculpted characters, organic surfaces, or heavy mesh cleanup, direct modeling tools are usually faster and more natural.
  • Assembly and fits: Code can make clearances and tolerances explicit, but you must think in coordinates and constraints rather than nudging parts by eye.

H3 Concrete scenario

Suppose you are designing a wall-mounted holder for a specific device. In a traditional modeller, you might sketch the profile, extrude it, add screw holes, then adjust by dragging when the fit is wrong. In OpenSCAD, you would define device_width, wall_thickness, and screw_diameter as variables, build the holder from cubes and cylinders, and re-render after changing one number. The trade-off: you get easy iteration and documentation, but creating a decorative curved surface takes more effort than sculpting it.

H3 Next step

Decide based on what must change most often. If your design is defined by measurements, repeatability, and parameters, start with OpenSCAD and follow its tutorial and cheat sheet from the project site OpenSCAD. If your design is defined by freeform shape and visual sculpting, choose a direct-modeling tool instead. For a quick trial without installing, the project points to an in-browser prototype, and ready-made designs can be found on community repositories such as Printables and Thingiverse.

How can I get started with OpenSCAD and learn its basics?

Start by installing OpenSCAD on your platform from OpenSCAD, then work through its official tutorial and cheat sheet. The tutorial walks you through the language step by step, and the cheat sheet is a quick reference for the modules and functions you will use most. Because OpenSCAD models are written as code rather than drawn with a mouse, expect to spend your first session typing simple shapes and re-rendering to see what changes.

A practical first project: model a small box with a lid. You will touch the core ideas in one file — cube() for the body, translate() to position parts, difference() to hollow the inside, and cylinder() for a hinge pin. Render with F5 to preview and F6 for a full render before exporting an STL.

H3 Ways to learn

  • Official tutorial and user manual on Wikibooks: structured, free, and the reference most users return to.
  • Cheat sheet: best kept open beside your editor once you know the basics.
  • Libraries: ready-made building blocks for threads, gears, and rounded shapes, so you avoid reinventing common geometry.
  • Books: the site lists OpenSCAD titles, including This is OpenSCAD by Roberto Hamm, useful if you prefer a linear, printed path.
  • Browser playground: a prototype lets you try the language without installing anything, handy for a first taste.
  • Community: the #openscad IRC channel on libera.chat and the project's Mastodon presence for questions.
  • Design sharing: browse models on Printables, Thingiverse, and MakerWorld; reading others' source files is one of the fastest ways to learn idioms.

H3 Choosing your route

If you are… Start with Why
New to code and CAD Tutorial, then the box project Builds syntax and geometry together
Comfortable programming Cheat sheet plus a library You can skim syntax and reuse components
Exploring before installing Browser playground Zero setup, immediate feedback
Prefer structured learning A listed book Sequential explanations and exercises

Your next step: open the tutorial, type the box example yourself rather than copying it, and change one parameter at a time. That habit — small edits, immediate render — is how OpenSCAD's language becomes intuitive.

What are some common use cases for OpenSCAD?

OpenSCAD is a free, code-based solid 3D CAD modeller, so its common use cases cluster around parts and objects that are easier to describe with parameters, dimensions and repetition than with mouse-driven sculpting. You write a script, and the model updates when you change numbers.

H3 Typical use cases

  • Parametric and customisable parts. Brackets, adapters, spacers, enclosures, jigs and fixtures where dimensions or hole spacing need to change per build. A single script can generate a family of sizes.
  • 3D-printable functional objects. Enclosures, boxes with lids, mounts, knobs and replacement parts that must fit measured components. The printable output is normally exported as STL and sliced separately.
  • Repetitive or geometric structures. Arrays, grids, gears, lattice or modular assemblies, where loops and simple primitives are faster and more precise than manual modelling.
  • Teaching and learning solid geometry. Constructive solid geometry (combining and subtracting primitives) is explicit in the code, which makes it useful in classrooms, makerspaces and self-study.
  • Version-controlled design work. Because models are plain text scripts, they can be diffed, reviewed and stored in Git alongside other project files, which suits small engineering teams and open-source hardware projects.
  • Generating variants programmatically. Scripts can produce many configurations or be driven by external data, which is awkward in direct-manipulation CAD.

H3 Who tends to use it, and the trade-offs

Programmers, engineers, teachers, makers and open-source hardware contributors are the natural audience. The main trade-off is that OpenSCAD is weak at organic, freeform or sculpted surfaces; for those, a direct-modelling or mesh-sculpting tool is usually a better fit. It also has no built-in photorealistic rendering focus — the workflow is model, export, then slice or render elsewhere.

H3 A concrete scenario

Suppose you are designing a wall bracket for a specific pipe diameter and screw spacing. In OpenSCAD you define the pipe diameter, wall thickness and screw-hole spacing as variables, subtract a cylinder from a block, and add countersunk holes. Changing the pipe size means editing one number rather than reworking the geometry. If you later need an organic curved cover that blends smoothly into the wall, that is the point to switch tools.

H3 Next step

Start with the official tutorial and cheat sheet, then model a simple parametric box. The OpenSCAD user manual and tutorial are hosted on Wikibooks, and ready-made libraries are linked from the project site. You can also try the browser-based prototype before installing anything. For inspiration and existing scripts, the project points to community design repositories such as Printables, Thingiverse and Makerworld.

Where can I find and share OpenSCAD designs online?

OpenSCAD designs are shared on general 3D-model repositories, not on openscad.org itself. The project page points to Printables, Thingiverse and MakerWorld as places to find designs, and it also links a browser-based prototype called OpenSCAD Playground for trying code without installing anything.

What each kind of destination is good for

  • Model repositories (Printables, Thingiverse, MakerWorld): best for browsing finished, printable objects and downloading STL or 3MF files. Search for "OpenSCAD" or "customizable" to find parametric models. Some listings include the original .scad source, which is what you actually want if you plan to modify dimensions or features.
  • OpenSCAD Playground: useful for opening a .scad file in a browser, editing parameters and rendering a preview. It suits quick experiments and sharing a link, but it is described as a prototype, so treat it as a convenience rather than a replacement for the desktop application.
  • Community chat: the project lists an IRC channel, #openscad on libera.chat, for talking with other users. Good for questions about syntax, libraries or geometry problems that a model page will not answer.
  • Documentation and libraries: the Wikibooks user manual and tutorial, the cheat sheet, and the libraries page help you learn the language and reuse ready-made building blocks instead of writing everything from scratch.

A practical way to share your own work

  1. Write your model so key dimensions are named variables at the top of the file, not hard-coded numbers scattered through the code.
  2. Test it with F5 preview and F6 render, and check for non-manifold geometry before uploading.
  3. Post the .scad file alongside the exported STL, plus a short note listing which parameters a user should change.
  4. Add a rendered image so people can see the result before downloading.

If you only want a printable part, any of the three repositories works. If you want others to remix your design, the .scad source matters more than the STL, because it lets them change dimensions rather than editing meshes.

What libraries and resources are available to extend OpenSCAD's functionality?

OpenSCAD's own site points to a small but practical ecosystem: built-in libraries, a manual, tutorials, a cheat sheet, books, and community channels. The official page lists "Libraries — Ready-made building blocks" as a starting point, alongside the OpenSCAD User Manual and Tutorial on Wikibooks and a Cheat Sheet covering modules and functions. For discussion, it points to the #openscad IRC channel on libera.chat and OpenSCAD on Mastodon.

What each resource is good for

Resource Best for Trade-off
Libraries (linked from the official site) Reusing ready-made building blocks instead of writing gears, threads, or fasteners from scratch Quality and maintenance vary by library; you inherit someone else's API and update pace
User Manual and Tutorial (Wikibooks) Learning the language, modules and functions from scratch Wiki format can lag behind new releases
Cheat Sheet Quick lookup while modelling Reference only, not a teaching text
Books Structured, longer-form learning May target an older version
IRC (#openscad on libera.chat) and Mastodon Asking humans when you are stuck Answers depend on who is around; IRC is not a searchable archive by default
Design repositories (Printables, Thingiverse, Makerworld) Finding existing models and studying their source Not all models ship editable .scad source

A practical next step

If you already model in OpenSCAD, start with the cheat sheet to confirm what is built in, then check the libraries page before writing a gear or thread generator yourself. If you are new, work through the Wikibooks tutorial first, because most third-party libraries assume you understand modules, for loops and include/use.

For adjacent tools, the wider 3D-printing community around Printables and Thingiverse is where many OpenSCAD designs and remixes are published, which is often the fastest way to see how a library is used in practice.

Related questions

More questions →
Can I try OpenSCAD in a web browser, and what learning materials are available?

Yes. The OpenSCAD website lists a prototype called OpenSCAD Playground that runs directly in your web browser, so you can try the tool without installing anything first. For learning, the site points to a Tutorial, a user manual and tutorial on Wikibooks, a Cheat Sheet, and a list of books.

Trying OpenSCAD without installing it

The official site describes OpenSCAD Playground as a "Prototype: OpenSCAD Playground directly in your WebBrowser." That is the entry point to use if you want to test the workflow before committing to a local install.

Keep in mind the site labels it a prototype, so treat it as a way to explore rather than a replacement for the desktop application. The full software is free and available for Linux/UNIX, MS Windows, and Mac OS X, with a "Download" link and an "Other OSs and Versions" option on the site.

Learning materials listed on openscad.org

Resource What it gives you
Tutorial A starting point to get going with OpenSCAD
Wikibooks user manual and tutorial A fuller reference and walkthrough
Cheat Sheet An overview of modules and functions for quick lookup
Books A list of OpenSCAD books, including This is OpenSCAD by Roberto Hamm
Libraries Ready-made building blocks to reuse in your models

The Cheat Sheet is the one to keep open once you start writing code, since it summarizes modules and functions instead of explaining them at length. The Libraries page matters if you would rather build on existing components than write everything from scratch.

Community support

The site lists several places to get help and see what others make:

  • IRC: #openscad on the libera.chat network, described as talking with humans
  • Mastodon: OpenSCAD's account
  • Design sharing: Printables, Thingiverse, and Makerworld, where you can find OpenSCAD designs

Browsing designs on those platforms is a practical way to see how other people structure their scripts, especially if you learn better from working examples than from documentation alone.

A sensible order to start

  1. Open the Playground in your browser to get a feel for the code-based approach.
  2. Work through the Tutorial for the basics.
  3. Keep the Cheat Sheet handy while writing your own models.
  4. Move to the Wikibooks manual when you need detail on specific modules or functions.
  5. Download the desktop version for Linux/UNIX, Windows, or macOS once you want to work on real projects.
Where to Find OpenSCAD Downloads, Tutorials, and Community Support

OpenSCAD's official site, openscad.org, is the starting point for all of it: the download page covers Linux/UNIX, MS Windows, and Mac OS X, and the same site links out to tutorials, a user manual, libraries, a cheat sheet, and community channels. If you want the software itself, go to the Download entry; if you want to learn it, the Tutorial and the Wikibooks manual are the two documented paths; if you want help from people, the IRC channel and Mastodon are the listed options.

Downloading OpenSCAD

The site describes OpenSCAD as free software for creating solid 3D CAD objects, available for Linux/UNIX, MS Windows, and Mac OS X. The main Download entry is the primary route, and there is a separate "Other OSs and Versions" link for anything outside those three platforms.

A practical note: the site also lists a prototype called OpenSCAD Playground that runs directly in your web browser. That is useful for trying the modelling approach before committing to an install, but it is described as a prototype, so treat it as a test drive rather than a replacement for the desktop application.

Learning: tutorials, manual, and cheat sheet

Three learning resources are linked from the site, and they serve different purposes:

Resource What it is for
Tutorial Getting started with OpenSCAD from the site itself
OpenSCAD User Manual and Tutorial on Wikibooks The fuller reference, hosted externally on Wikibooks
Cheat Sheet An overview of modules and functions for quick lookup

There is also a book in English, This is OpenSCAD by Roberto Hamm, plus a general list of books on OpenSCAD if you prefer learning from a printed or long-form source.

A sensible order for a beginner: work through the Tutorial to get a first object on screen, keep the Cheat Sheet open while you write code, and fall back to the Wikibooks manual when you need the precise behaviour of a module or function.

Libraries: ready-made building blocks

The Libraries entry points to ready-made building blocks you can reuse instead of writing everything from scratch. This matters because OpenSCAD is a script-based modeller — common shapes, threads, gears, and similar constructs are frequently already solved by someone else. Check the Libraries page before hand-rolling a component.

Community support and where to find designs

The site lists these channels:

  • IRC: #openscad on the libera.chat network — described on the site as the place to "talk with Humans"
  • Mastodon: OpenSCAD has a presence there for following updates
  • Design repositories: find OpenSCAD designs on Printables, Thingiverse, and Makerworld

The design repositories are worth using in two directions: downloading existing models, and reading other people's source files to see how a shape was actually constructed. Since OpenSCAD models are code, an existing design is often more instructive than a screenshot.

Which entry point to use

  • Just want the program → Download (or "Other OSs and Versions" if your platform is not Linux/UNIX, Windows, or macOS)
  • Want to try it without installing → OpenSCAD Playground in the browser
  • Starting to learn → Tutorial, then Cheat Sheet, then the Wikibooks manual
  • Stuck on a specific problem → #openscad on libera.chat
  • Looking for reusable code → Libraries
  • Looking for finished models or example source → Printables, Thingiverse, Makerworld
How Is OpenSCAD Different from Other 3D CAD Modellers?

OpenSCAD differs from most 3D CAD modellers in one fundamental way: you describe a solid model with code rather than by directly manipulating shapes in a graphical viewport. The site presents it as "The Programmers Solid 3D CAD Modeller," and that label is the clearest summary of its position. If you want to build models by writing and editing a script — and to get the same result every time you run it — OpenSCAD is designed for that. If you want to push, pull, and sculpt geometry with a mouse, a conventional interactive modeller will fit better.

The core difference: code as the modelling interface

In a typical interactive CAD or mesh tool, the model is the thing you see on screen. You sketch a profile, extrude it, drag a face, and the software records the result. The history tree, if there is one, is usually a record of operations you performed rather than a program you authored.

In OpenSCAD, the model is the output of a script. You write statements that create and combine solid primitives, then render the result. The geometry is a consequence of the code, not of direct manipulation. That single design decision drives almost every other difference.

What that changes in practice

Parametric by construction

Because the model is a program, parameters are just variables. Changing a dimension means changing a value and re-rendering, and every dependent feature updates accordingly. This is parametric modelling in the most literal sense — the parameters are part of the source text, not a separate constraint system layered on top of a shape.

Reproducible and version-controllable

A script is a text file. That means it can be diffed, committed to version control, reviewed, and shared as a small file rather than a binary document. Two people running the same script with the same version of OpenSCAD should get the same solid. For teams that already work with Git and code review, this fits existing habits.

Programmer-oriented workflow

The site's own framing — "The Programmers Solid 3D CAD Modeller" — signals the intended audience. Loops, conditionals, modules, and functions are available for building geometry, so repetitive or rule-driven structures can be generated rather than drawn. Someone comfortable with programming tends to find this natural; someone expecting a drawing-first interface may find it indirect.

Solid CAD, not just meshes

OpenSCAD is described as software for creating solid 3D CAD objects. The modelling operations work on solids, which matters when you need watertight geometry for manufacturing rather than a surface mesh assembled by hand.

Where the trade-off shows up

Aspect OpenSCAD Typical interactive modeller
Primary input Code / script Mouse and viewport tools
Parametric changes Edit a variable, re-render Edit a dimension or constraint
Reproducibility Deterministic from source text Depends on stored document state
Version control Plain text, diffable Often binary or complex formats
Learning curve Programming concepts Spatial/UI concepts
Best fit Rule-driven, parametric, repeatable parts Freeform, visual, exploratory design

The table is a description of the modelling paradigm, not a ranking. Neither column is better in general; they suit different tasks and different people.

How to decide which approach you want

Choose OpenSCAD when:

  • The part is defined by dimensions and rules you can state in advance.
  • You want to generate many variants from one source by changing parameters.
  • You want the design stored as reviewable, version-controlled text.
  • You are comfortable expressing geometry as code.

Choose an interactive modeller when:

  • The design is exploratory and you need to see and feel the shape as you go.
  • The geometry is organic or freeform and hard to describe procedurally.
  • You would rather not write code to get a model.

Getting oriented

The OpenSCAD site points to a tutorial for getting started, a library collection of ready-made building blocks, a cheat sheet summarising modules and functions, and a list of books. There is also a browser-based prototype, OpenSCAD Playground, for trying it without a local install, plus community channels including the #openscad IRC channel on libera.chat and a Mastodon presence. Designs can be found on Printables, Thingiverse, and Makerworld.

A practical first step is to reproduce a simple parametric part — a bracket with adjustable hole spacing, for example — and change one variable to confirm the model updates as expected. That single exercise makes the code-driven paradigm concrete faster than any description.

What is OpenSCAD?

OpenSCAD is free software for creating solid 3D CAD objects. It is available for Linux/UNIX, MS Windows and Mac OS X, and it is aimed at people who prefer to describe a model in code rather than draw it with a mouse. If you want scripted, parametric 3D modelling and a tool you can download and run locally, OpenSCAD fits that job.

How OpenSCAD differs from typical 3D CAD

Most CAD tools are interactive: you sketch a shape, extrude it, and drag edges until it looks right. OpenSCAD works the other way around. You write a description of the object, and the software builds the solid from that description.

That difference matters in practice:

  • Models are text. A design is a script you can read, edit, diff, and store in version control.
  • Dimensions are parameters. Because values live in the script, changing a size means changing a number, not re-drawing geometry.
  • Results are reproducible. The same script produces the same solid, which is useful when a design needs to be regenerated or shared.

The trade-off is that you do not get direct manipulation. You cannot grab a face and pull it; you change the code and re-render.

What you can do with it

OpenSCAD is built for solid 3D CAD objects, so it suits parts and shapes that can be expressed as combinations of primitives and operations. Typical uses include mechanical parts, enclosures, brackets, adapters, and other functional objects where exact dimensions matter more than organic surface detail.

The official site points to several ways to go further:

  • Tutorial — get started with OpenSCAD.
  • Libraries — ready-made building blocks you can reuse instead of writing everything yourself.
  • Cheat Sheet — an overview of modules and functions.
  • Books — a list of books on OpenSCAD, including This is OpenSCAD by Roberto Hamm.
  • User Manual and Tutorial on Wikibooks — longer-form reference material.

There is also an OpenSCAD Playground prototype that runs directly in your web browser, which is a low-commitment way to try the approach before installing anything.

Who it is for

OpenSCAD tends to fit well if you:

  • are comfortable writing code or are willing to learn a small language;
  • need parametric parts where dimensions are driven by variables;
  • want a free, open-source tool that runs on Linux/UNIX, Windows, or macOS;
  • care about keeping designs as text files.

It tends to fit less well if you:

  • need freeform sculpting or organic modelling;
  • prefer direct manipulation and visual feedback while shaping geometry;
  • are modelling something that is hard to express as a script.

Getting started

  1. Go to openscad.org and download the version for your operating system.
  2. Work through the Tutorial to learn the basic modelling approach.
  3. Keep the Cheat Sheet nearby as a reference for modules and functions.
  4. When you need common shapes, check the Libraries section before building them yourself.
  5. If you want to try it without installing, look for the OpenSCAD Playground prototype in your browser.

You can also find existing designs on Printables, Thingiverse, and Makerworld, and talk with other users in #openscad on the libera.chat IRC network or follow OpenSCAD on Mastodon.

Website Overview

An established domain and managed infrastructure suggest continuity of operations and may support dependable delivery, although neither guarantees service quality. Several search or sharing settings need attention. Together they may make snippets, preview images or preferred URLs less consistent across platforms.

Domain and Registration

Registered in 2009, this domain has about 17 years of history. That suggests continuity, although ownership and purpose may have changed. Transfer-protection status is present, helping reduce the risk of unauthorized domain transfers. The registrar is Gandi SAS, a widely used domain service provider. The domain uses the common .org extension, which is not an independent safety signal.

DNS and Email

The observed email authentication setup is incomplete: SPF is missing. Nameservers are provided by gandi.net, indicating managed DNS hosting. MX records point to the gandi.net email service. No CNAME was found; the observed records resolve directly to addresses. DNSSEC signatures were not detected, so this additional DNS authenticity protection is not confirmed.

TLS and Certificates

The certificate uses an RSA 2048-bit public key, offering broad client compatibility. The server supplied a complete certificate chain. No organization name is present in the certificate; the available fields are consistent with domain validation. The certificate was issued by Let's Encrypt, commonly associated with automated certificate services. The certificate's total validity is about 89 days, consistent with a short renewal cycle.

HTTP and Browser Security

The checked browser-security headers were not detected, leaving fewer explicit browser-side safeguards. CORS permits any origin to read this response. This is common for public resources; sensitive responses need narrower handling. No X-Powered-By header was found, reducing one common source of backend fingerprinting information. The x-cache, x-served-by, via response header indicates a CDN or caching proxy in the delivery path. No obvious internal addresses or debug information were found in the headers.

Technology Stack Analysis

The public page identifies Fastly without precise versions, leaving fewer clues for version-specific scanning.

Search and Social Sharing

No homepage meta description was detected, leaving snippet selection more dependent on page text. No viewport meta tag was detected, which may affect mobile layout behavior. No homepage canonical URL was detected. If duplicate URLs exist, consolidation may be less explicit. Open Graph is partially configured; og:description is missing. The title has 48 characters, within a common display range.

Hosting and Email

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AssessmentNormal configuration
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Certificate subjectopenscad.org
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Verification detailsCertificate trust: Passed · Hostname match: Passed

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